Block mold



April 2, 1957 Filed July 16. 1954 J. E. DANIELL BLOCK MOLD l 3 Sheets-Sheet l JEpa n @1222 ATTORNEY 5 J. E. DANIELL April 2, 1957 BLOCK MOLD l 3 Sheets-Sheet 2 Filed July 16. 1954 INVENTOR ATTORNEYS ln rll I wwwww l United States Patent "ice 2,787,043 BLOCK MOLD Johnnie Daniell, Yulee, Fla. Application July 16, 1954, Serial No. 443,813 Claims. (Cl. 254-121 This invention relates to apparatus for casting concrete material in the form of blocks, and comprises a continuation-impart of my co-pending application, Serial No. 323,458, filed December 1, 1952, now abandoned, entitled Concrete Block Form.

More specifically, this invention pertains to apparatus for molding concrete blocks and is especially directed to the molding of concrete building blocks of the type comprising a pair of connected, spaced, inner and outer blocks for forming an air pocket or space in the walls, the inner and outer blocks taken together comprising a unit.

One of the primary objects of this invention is to provide a molding core for use in molding concrete blocks of the type described, the core being of a plurality of shapes and adapted for use in a mold having a peripheral wall and pallet common to all.

A further object of this invention is to provide a combined molding core and pallet for supporting the concrete until it has set.

Another object of this invention is to provide a mold core for use in making a pair of spaced concrete blocks with means for supporting tie bars so that the spaced blocks will be firmly and rigidly secured together.

Other and further objects and advantages of the present invention will become more apparent from a consideration of the following specification when read in the light of the annexed drawings, in which:

Figure 1 is a top plan view of a core and pallet constructed in accordance with this invention.

Figure 2 is a cross-sectional view taken on the hori- Zontal plane of line 22 of Figure 1, looking in the direction of the arrows.

Figure 3 is a horizontal cross-sectional view of the entire mold core taken generally on the line 3-3 of Figure 2, looking in the direction of the arrows.

Figure 4 is a cross-sectional view taken on the Vertical plane of line 4-4 of Figure 1, looking in the direction of the arrows.

Figure 5 is a partial cross-sectional exploded view taken on the line 5-5 of Figure 3, looking in the direction of the arrows.

Figure 6 is a cross-sectional detail view of the connector between the slidable supports, taken on the line 66 of Figure 3, looking in the direction of the arrows.

Figure 7 is a perspective view of the connector shown in Figure 6.

Figure 8 is a partial detail cross-sectional view showing the connecting means for the upper ends of the core.

Figure 9 is a partial detail cross-sectional view showing the connecting means for the lower ends of the core.

Figure 10 is a side elevation of a second embodiment of a mold core constructed in accordance with this invention.

Figure 11 is a top plan view of the mold core shown in Figure 10.

Referring now more specifically to the drawings, the molding apparatus constructed in accordance with the teachings of this invention is generally designated at 10 2,787,043 Patented Apr. 2, 1957 and comprises a substantially rectangular base or pallet 11 on which is supported a mold core 12 formed of two connected sections 13 and 14, of which section 13 shall hereinafter be designated the outer mold section and part 14 shall be referred to as the inner mold section.

The outer and innermold sections 13, 14 are substantially L-shaped in configuration and the outer section 13 comprises an elongated base 15 having an extension 16 projecting therefrom at substantially a right angle. An integrally formed outer side wall 17 extends upwardly from the base 15 and is inclined inwardly relative thereto. An outer end wall 18 integrally formed with the base extension 16 extends upwardly therefrom and is inclined inwardly at substantially the same angle as the outer side wall 17. As is seen in Figure 3, the adjacent ends of the walls 17, 18 are also integrally connected. The upper ends of the walls 17, 18 terminate in laterally extending integrally formed .top walls 19, 29 connected integrally at their respective adjacent ends. The top walls 19, 20 are disposed substantially parallel to the base members 15, 16, respectively, and are provided with a plurality of spaced recesses 21 to serve a function to be described.

The inner surface of the wall 17 is provided with a plurality of spaced longitudinal substantially rectangular recesses 22 having machined end walls 24, 26 and side walls 23 which extend perpendicularly to the base 15. The inner side 29 of the top wall 19 is also machined to present a surface substantially parallel to the base 15.

i The inner side of the outer section 13 is provided with a longitudinally extending rib 30 positioned intermediate the top wall 159 and the base 15;. Rib '30 connects at its innermost end with a rib 31 which extends longitudinally of the inner side of the wall 18, and the upper sides of each of the ribs are machined to present a surface which extends substantially parallel to the base 15.

The top wall 19 is provided with a transverse slot 32 which is in open communication with a slot 33 which extends downwardly in the side wall 17. A similar slot 34 extends transversely across the top Wall. 19 and communicates with the upper end of a slot 35 formed in the side wall 17, but in the latter case the slot 35 extends downwardly a greater distance than the dimension of the slot 33. The top wall 26 is formed with a transversely extending slot 36 which connects with the upper end of a slot 37 which exten s downwardly in the end wall 18. The slot 37 has the same dimensions as the slot 35.

The inner section 14 of the mold is constructed substantially in the same manner as the outer section. It is seen that the inner section includes a longitudinally extending base 38 having a lateral extension 39 projecting from one end thereof at substantially right angles. An integrally formed inner side wall 40 extends upwardly from the base 15 and is inclined inwardly relative thereto. An inner end wall 41 is, integrally formed with the base extension 39 and is inclined inwardly at substantially the same angle as the inner side Wall 40. As is seen in Figure 3, the adjacent ends of the walls 41), 41 are also integrally connected.

The upper ends of the walls 40, 41 terminate in laterally extending integrally formed top walls 42 and 43, respectively, the last-named walls being connected integrally at their respective adjacent ends. The top walls 42, 43 are disposed substantially parallel from the base members 38, 39, and are provided with a plurality of spaced recesses 44 to serve a purpose to be described.

The inner surface of the wall 40 is provided with a plurality of spaced substantially rectangular recesses 45 similar to the recesses 22 formed in the outer mold section 13. The recesses 45 are machined to provide end walls 46 and side walls 47 which extend perpendicularly to the base 38. The inner side 48 of the top, wall 42 is also 3 machined to present a surface substantially parallel to the base 15.

Intermediate the top and bottom of the inner section 14 an elongated rib 49 extends longitudinally of side wall and connects at its inner end with the inner end of a similar rib 50 formed on the inner side of the end wall 41.

A transversely extending slot 51 is provided in the top wall 42 and communicates with the upper end of a slot 52 formed in the side wall 40 adjacent one of its ends. A similar slot 53 is formed in the top wall 42 and communicates with the upper end of a slot 54 formed in the side wall 40. The slot 54, in this instance, is shorter in length than the slot 52. A similar pair of slots are formed in the top wall 43 and end wall 41 and comprise the transverse slot 55 and the vertical slot 56.

At the juncture of the walls 40 and 41 a substantially hollow boss 57 is provided having an opening therethrough adapted to receive the leg portion 58 of a toggle member 59 which includes the L-shaped arms 60, 61 and the vertically projecting ends 62, 63, respectively. The ends 62, 63 are adapted to engage upwardly in slotted openings 64, 65 positioned in the adjacent inner ends of a pair of slidable plates 66 and 67, respectively. The plates 66 and 67 are adapted for longitudinal movement on the ribs 30, 49, 31 and 50. The plates 66 and 67 are each provided with sand bleeder holes 66', 67 which are aligned with bleeding openings 200 formed by confronting semi-circular recesses formed in the bases 15, 38 and 16, 39, respectively.

A pair of substantially U-shaped channel members having opposed side walls 68, 69 and 70, 71 and back walls 72 and 73, respectively, are secured to the plate 67 as by welding at '74. The channel members are provided with top walls 75 and 76, and the side walls 68, 69 and 70, 71 are formed with oppositely disposed and aligned slots 77, and similar slots 78 are formed in the side walls 70, 71. In the latter case, however, the slots 78 are positioned adjacent the lower end of the channel member, whereas the slot 77 is positioned adjacent the upper end of its respective channel member.

A similar channel member is mounted on the plate 66 and includes a pair of oppositely disposed sides 79, 80 having oppositely disposed slots 81, 82 formed therein and a back wall 83. An integrally formed top wall 84 extends between the side walls 79, 80. An internally threaded boss 85 is secured as by welding at 85 to the outer end of the plate 67 and is adapted to receive one end of a push rod 86.

The inner and outer mold core sections 13, 14 are provided with a plurality of transversely extending threaded openings 87, 88 which are aligned and adapted to receive therethrough the threaded bolts 89 to secure together the inner and outer mold sections at their respective bases. The mold sections 13, 14 are connected at their upper ends by means of links 90 which are disposed in the aligned recesses 21 and 44 and connected thereto by the screws 91.

The assembled core is adapted to be secured to the pallet 11 by means of bolts 92 which are threaded into suitable openings 93 formed in the base members of the inner and outer mold core sections 13, 14.

The mold includes oppositely disposed side walls 94, 95 and end walls 96, 97 which project vertically from the pallet 11.

The end wall 97 is provided with an aperture 98 whereby upon assembly of the mold 12 and having secured the same within the mold box, the push rod 86 is then extended through the opening 98 for threaded engagement with the boss 85.

In the molding operation, the channel-shaped members are moved laterally with the plates 66, 67 until the side walls thereof and their respective top wall uncover the adjacent slots formed in the top walls and side walls of the mold core. Thereafter, a Z-shaped connecting link 99 is inserted in the mold slots and the push rod' 86 is then operated to cause the channel members to move in the opposite direction whereby the members 99 are engaged within the slots formed within the side wall of the channel members and is securely locked in position on the mold.

It is to be understood, of course, that as the plate 67 is shifted in one direction or the other, similar movement will occur with respect to the plate 66, the force utilized in shifting the plates being transmit-ted through the toggle member 59.

A modification of this invention is illustrated in Figures 10 and 11. In these figures the construction of the mold is identical to the embodiment described above with the exception that the offset end portion of the mold 12 has been omitted. In this case, the mold is seen to comprise a pair of oppositely disposed sections 100, 101 and includes a base 102 and the inwardly inclined side walls 103, 104 together with the integrally formed top walls 105 and 106.

Aligned recesses 107, 108 are formed in the top walls 105, 106 and are adapted to receive therein the links 109 which are secured to the top walls by screws 110.

The side walls 103, 104 are slotted at 111, 112 which communicate with transverse slots 113 formed in the top walls 105, 106. The slots 111 and 112 are of greater length than the slots 114, 115 formed in the side walls 103, 104 intermediate the slots 111, 112. The slots 114, 115 connect at their upper ends with a transverse slot 116 formed in the top walls 105, 106.

Channel-shaped members 117 constructed identically to the channel-shaped members previously described are mounted on a plate (not shown) supported within the mold sections 100, 101 and adapted for longitudinal movement. A push rod 118 is secured to one end of the plate in order to provide means for manually shifting the plate in one or the other direction.

Having described and illustrated this invention in detail, it will be understood that the embodiments presented herein are offered by way of example and that the invention is only to be limited by the scope of the following claims.

What is claimed is:

l. A mold core comprising an elongated substantially L-shaped hollow body comprising a base having a pair of spaced oppositely disposed side walls, each of which terminate at one of their respective ends in a pair of angularly disposed spaced end walls, a top wall extending between the upper ends of said side and end walls, said top and side walls having slots extending therethrough at spaced intervals, an elongated substantially rectangular plate disposed Within said core between said side walls, a second elongated substantially rectangular plate disposed within said core between said end walls, means connecting the adjacent ends of said plates whereby movement of one of said plates eifects a corresponding movement in the other of said plates, means fixedly mounted on said plates adapted for movement to open and close said slots and to lock block connecting links therein, and means on one of said plates for manually manipulating said plates in one or the other direction.

2. A mold core for making concrete blocks comprising an elongated base having a pair of side walls projecting upwardly therefrom and inclined inwardly with respect to each other, each of said side Walls terminating in an end wall disposed at substantially right angles to their respective side walls, said end walls being inclined toward each other, a top wall extending between the upper ends of said side and end walls, a rib disposed on each of said side and end walls with the ribs thereof in confronting relation relative to each other, said top wall having a plurality of slots formed therein communicating with slots formed in the opposite sides of said side and end walls, an elongated substantially rectangular plate mounted for movement longitudinally on said ribs formed on said side Walls, a second elongated substantially rectangular plate mounted for longitudinal movement on said ribs formed on said end walls, means mounted on each of said plates for locking a cement block connecting link in said slots formed in said side and end Walls, means connecting the adjacent ends of said plates for transmitting the movement of one of said plates to the other of said plates, and means for effecting the movement of said plates.

3. A mold core for making concrete blocks comprising an elongated base having a pair of side walls projecting upwardly therefrom, each of said side Walls terminating at one of their respective ends in end walls disposed at substantially right angles to their respective side walls, a top wall extending between the upper ends of said side and end walls, a rib disposed on each of said side and end walls with the ribs thereof in confronting relation relative to eachother, said top wall having a plurality of slots formed therein communicating with slots formed in the opposite sides of said side and end walls, an elongated substantially rectangular plate mounted for movement longitudinally on said ribs formed on said side walls, a second elongated substantially rectangular plate mounted for longitudinal movement on said ribs formed on said end walls, means mounted on each of said plates for locking a cement block connecting link in said slots formed in said side and end walls, means connecting the adjacent ends of said plates for transmitting the movement of one of said plates to the other of said plates, and means for effecting the movement of said plates.

4. A mold core for making concrete blocks, each of said mold core pieces comprising an elongated substantially L-shaped base having laterally projecting side and end walls integrally formed therewith and with each other, a top wall integrally formed with the upper ends of said side and end walls and projecting over said base, said side and end walls having slots formed therein, said L-shaped pieces having the bases thereof disposed in sideby-side relation with the side and end walls remotely disposed relative to each other and with said slots in said side and end walls of one of said pieces aligned with said slots formed in said side and end walls of the second piece, respectively, means connecting together said first and second pieces to form a mold core, an elongated substantially rectangular plate disposed within said core between said side walls, a second elongated substantially rectangular plate disposed within said core between said end walls, means connecting the adjacent ends of said plates whereby movement of one of said plates effects a corresponding movement in the other of said plates, means fixedly mounted on said plates adapted for movement to open and close said slots and to lock block connecting links therein, and means on one of said plates for manually manipulating said plates in one or the other direction.

5. A mold core comprising an elongated substantially L-shaped hollow body comprising a base having a pair of spaced oppositely disposed side walls, each of which terminate at one of their respective ends in a pair of angularly disposed spaced end walls, a top wall extending between the upper ends of said side and end walls, said top and side walls having slots extending therethrough at spaced intervals, an elongated substantially rectangular plate disposed within said core between said side walls, a second elongated substantially rectangular plate disposed within said core between said end walls, toggle means pivotally mounted within said core and connecting the adjacent ends of :said plates whereby movement of one of said plates efiects a corresponding movement in the other of said plates, means fixedly mounted on said plates adapted for movement to open and close said slots and to lock block connecting links therein, and means on one of said plates for manually manipulating said plates in one or the other direction.

References Cited in the file of this patent UNITED STATES PATENTS 987,319 Potter Mar. 21, 1911 1,173,880 Shearer Feb. 29, 1916 1,468,065 Williams Sept. 18, 1923 1,531,239 McCollum Mar. 24, 1925 2,397,728 Dowsett et al. -e Apr. 2, 1946 2,6l4,308 Burkard et al. Oct. 21, 1952 FOREIGN PATENTS 168,258 Great Britain Sept. 1, 1921 594,432 Great Britain Nov. 11, 1947 

